Pressure tank



J. R. BARROW PRESSURE TANK March 23, 1954 Filed July 14, 1950 INVENTOR.d/rzesfl. flak/0W 2 Sheets-Sheet l March 23, 1954 J. R. BARROW 2,673,010

PRESSURE TANK Filed July 14, 1950 2 Sheets-Sheet 2 IN V EN TOR.

Patented Mar. 23, 1954 UNITED STATES PATENT OFFICE PRESSURE TANK JamesR. Barrow, Columbiana, Ohio Application July 14, 1950, Serial No.173,898

1 Claim. 1

' This invention relates to a container and more particularly to acontainer for holding corrosive fluids or the like.

The primary object of the invention is to facilitate the shipping andhandling of fluids under pressure and more particularly fluids of acorrosive nature which are likely to injure or destroy the material fromwhich the container is made.

Another object is to protect against such injury the container and atthe same time to avoid contamination of the contents thereof throughcontact with the main body portion of the container.

Among its features the invention embodies a container of ferrous metal,such as steel having a heavy coating of nickel or other corrosiveresistant substance on the interior thereof, which coating is of athickness at least equal to onefourth 'of the thickness of the metalfrom which the container is constructed.

Other features employ composite welds in joining the parts of thecontainer together so that the portions of the welds which contact thecontents of the container will be formed of the corrosive resistancesubstance.

Still other features include equipping the container at one end with avalve housing or chamber which is disposed within the confines of thecontainer, and a removable cover closing the open end of the valvechamber efiectively to protect the valves in said chamber from damage orbeing tampered with.

In the drawings:

Figure 1' is a fragmentary side view of a con tainer embodying thefeatures of this invention, certain portions thereof being shown insection more'clearly to illustrate certain details of construction,

Figure 2 is an end view of the container,

Figure 3 is a sectional view taken substantially along the line 3-3 ofFigurel,

Figure 4 is an enlarged detailed view of the locking boss by which thecover plate of the container is held in place,

Figure 5 is a fragmentary side view of a. modified form of container,certain portions thereof being shown in section more clearly toillustrate certain details of construction,

Figure 6 is an end view of the container illustrated in Figure 5, and

Figure 7 is an enlarged detailed view of the locking means for the coverof the modified form of container.

Referring to the drawings in detail this improved container designatedgenerally 10 comprises a hollow cylindrical body l2 which is preferablyformed of ferrous metal such as steel. This body is relatively thin andis equipped on its inner side with a layer or coating of nickel or othercorrosive resistant material M which is of a thickness at least equal toone-fourth of the thickness of the body l2. Carried at one end of thebody I2 is a head It of steel or like ferrous metal which is preferablyof considerably greater thickness than the thickness of the body l2 andcarries on its inner surface a coating [8 of corrosive resistantsubstance such as nickel which is of a thickness substantially equal tothe thickness of the coating M on the body H2. The head 16 isconcave-convex in form and its convex side is disposed outwardly. Thejunction of the body 12 with the head 16 is formed by a weld 20 such asis commonly employed in joining ferrous metals together, and joining thelining or coatings I4 and I8 is a weld 22 of nickel or other corrosiveresistant metal.

Carried at the end of the tubular body [2 remote from the head I6 is aconcavo-convex head 24 of a thickness substantially equal to the head l6and carried on the concave side of the head 24 is a lining or coating 26of corrosive resistant substance such as nickel which is of a thicknesssubstantially equal to the thickness of the coating [4 on the body l2.Like the junction of the head IS with the body l2, the junction of thehead 24 with the body 12 is effected by a conventional weld 23 such asis commonly employed in joining ferrous metals, and a weld 30 ofcorrosive resistant substance joins the linings l4 and 26 so as to forma complete corrosion resistant lining for the container. Formed axiallyin the head 24 is a relatively large opening 32 for the reception of arelatively thin concavoconvex closing head to be more fully hereinafterdescribed. The closing head designated generally 34 comprises aconcave-convex end member 33 provided with an annularflange 38 whichfits in the opening 32 as will be readily understood upon reference toFigure 1. The concavoconvex body 36 and the flange 38 thereof are formedof a ferrous metal such as steel and is of a thickness substantiallyequal to the thickness of the body [2 previously referred to. A layer orcoating of lining material 40, such as nickel is carried on the convexside of the body 36 and extends around the periphery of the fiange38 toform a complete protective coating for the body 36. This coating 40 isof a thickness substantially equal to the thickness of the coating I4,and the flange 38 is passed through the opening 82 and is joined to thehead 24 by a conventional weld 42 While the coatings 26 and 30 arejoined by an annular weld M of nickel or other material which willresist corrosion. The body at and the coating 4:; thereon are formedwith aligning openings 46 in which is received the tubular shank 4-3 ofa nipple 50 which is preferably formed of nickel or other corrosionresisting material and carries intermediate its ends an annular flange52 forming a shoulder'54 which bears against the coating 40 and iswelded thereto as at 56 by a weld of corrosion resisting material, suchas nickel. Welded as at "58 to each nipple it is an eduction pipe 60having its end disposed adjacent the body 12 in the immediate vicinityof the weld 30 which joins the lining i l with the lining 26. Thesepipes are also formed of a corrosion resisting material such as nickelso as to avoid contamination of the contents of the containerduring-storageand transportation therein. The portions of the members itof the nipples M which extend through the openings 45 are joined to thebody 35 by conventional welds .62, and threaded into the cylindricalextensions 43 are valves 64 which are housed within the valve chamber 56formed by the head 34 within the confines of the con tainer.

Carried by the flange '38 on the head 34 are peripherally spacedinwardly extending lugs =58 which are diametrically opposed and form.stops against which the peripheral-edge of a concaveconvex cover platet engages. Carried by the flange 3t midway between the lug -68 is aninwardly extending lug l2 and .fixed to the inner side of the coverplate '5'!) is a hook shaped retainer M which is adapted to enga ebehind the lug 12 to aidin holding the plate it against the lugs 6%. Anangularly extend ng inwardly projecting lu ilfi is carried by the flange38 diametrically opposite the lug 12 and is formed with an internallyscrew threaded open ng 82 for the reception of a cap screw '84 whichprojects through an openinril formed ad acent the edge of the plate itdiametrically opposite the hook shaped retainer M. Drain=openin-s 88 areformed at spaced points in the cover 10 for draining moisture which mayresult from condensation within the chamber 6.6.

In the modified form of the invention illus-- trated in Figure 5, thecontainer desi nated generally 90 comprises a tubular body 92 toopposite ends of which are welded .heads to form a completely closedcontainer. The head 94 is joined to body 9.93 by a conventional weld Q5and is formed with an axial opening 98 in which a relatively th n head1.00 is supported by a conventional weld 1.9.2. .It is to be .noted thatthe head 9c is of considerably greater thickness than the body .92 andthat the head I00 isrof a thickness substantially equal to the thicknessof the body 92. Asillustrated, the head I00 issubstantiallyconcavo-convex in form and is provided at its periphery with an annularflange [M which fits within the opening .98. Formed in the head adjacentthe longitudinal axis of the container are spaced internally screwthreaded openings Hit; in which valves P8 are threaded. Welded as at litto the'head we and in surrounding relation with the open ngs Hi6 arenipples H2 which project into the container and support at their innerends eduction pipes H4 which communicate with the interior .of thenipplesand are welded to said nipples as at U6.

i. place.

The ends I it of the eduction pipes I [4 are turned outwardly toward thebody 92 and their ends I 18 are disposed adjacent the body 92 in theimmediate vicinity of the weld 96.

Carried by the flange 1M and extending into the valve chamber I20 formedwithin the head Hlii are circumferentially spaced lugs I22 each of whichis provided with a relatively narrow overhanging lip I24 for engagementwith a flange 1Z6 carried at the periphery :of i a cover plate 128 whichforms an end closure for the valve chamber I20. The flange I26 isprovided with peripherally spaced notches 136 of a width sufiicient toreceive the overhanging lips iz i of the lugs I22.

Carried by the flange its of the body tilt and ex- 'tendinginwardly ofthe chamber between the lugs .422 is alug 132 having an overhanging lipltd which corresponds to the lips 12 i previously described except thatit is formed with an in-- ternally screw threaded opening 536 for thereception of the threaded shank-of a cap screw i313 which when the coverM28 is in position in closing relation with the valve chamber 12cengages the flange ['26 to effectively hold the cover in Like the coverit previously described, the cover 128 is formed with drain openings methrough which'moisture may escape from the interior .of the chamber 120.

In use when it is desired to ship or store .corrosive substances, thecontainer illustrated in Flames 1 through 4 inclusive is .employedand itwill be obvious that the substance to be shipped or stored may beintroduced into the container through the valves 6d, nipples 5t andpipes :68

-- so as to avoid contact with any material other than the corrosiveresistant lining of the container. Obviously contamination of thecontents of the container will-thus be overcome and any damae to thebody of the container It by 7 contact with :the corrosive substance willbe avoided. It is obvious that the contents of the container may bedrained by so positioning the container that the-eduction pipes willextend vertically while the container lies on its side. In the preferredform \of the invention both containers iii and 99 are equipped atopposite ends with bands I42 which extend beyond the convex ends 'of thecontainer and are provided at their ends remote from the container withinturned flanges M4 which not only serve to protect the heads of thecontainers but also as handling means-by which the containers may besuspended by suitable grappling means. In the preferred form, the bandshi2 are provided at spaced 'intervals with drainage-openings i 46to'prevent the accumulation of moistures between the heads the flangesI44.

Obviously the ,inturned flanges Mi on thebands M2 not only protect theends of the container'but afiord level bases upon which the containermay rest-whenin an upright position. They also provide means by which agrabhoolror a hold down hook may be connected to the container duringloading and transportation. They also serve as means by which skids orshoesmay be connected to the container. If so desired the heads 38, S4and W8 may be provided with bushings 550 having internally screwthreaded openings for the reception of plugs which are providedwithaxial openings containing-a substance which will melt whensubjected' to a temperature which exceeds a predetermined value. It isevident that should ,suiiicient internal pressure be created withineither the container it or the container 9i} itheiheads v30 or IBG willflex even to the point of reversing their contour and thus avoid thebursting or" the containers.

While in the foregoing ther has been shown and described the preferredform of this invention, it is to be understood that minor changes in thedetails of construction, combination and arrangement of parts may beresorted to without departing from the spirit and scope of the inventionas claimed.

I claim:

A container comprising a relatively thin elongated hollow cylindricalbody, a relatively thick concave-convex head carried by and closing eachend of said body, one of said heads having a relatively large centralopening, a relatively thin auxiliary concave-convex head closing saidopening with its convex side inwardly disposed and forming a valvechamber wholly within the container, said auxiliary head having adischarge port opening through the same, a pipe within the containerleading from said port and extending angularly to a point adjacent thejunction of said body with the said one head, a valve within the valvechamher and connected with said port to control the discharge of thecontent of the container from the pipe, circumferentially spaced lugscarried by said auxiliary head and projecting into the 6 valve chamber,a concave-convex cover closing said valve chamber with its convex sideoutwardly disposed and its curvature conforming to that of said onehead, and a flange at the periphery of the cover for engagement with thelugs and having spaced notches extending through its periphery forreceiving said lugs and to allow said flange to be turned into and outof engagement therewith during the mounting and demounting of the coveron the container.

JAMES R. BARROW.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 400,318 Feld et a1. Mar. 26, 1889 482,233 Dreisoerner Sept. 6,1892 1,854,352 Thomas Apr. 19, 1932 2,092,490 Zerbe Sept. 7, 19372,136,474 Straty Nov. 15, 1938 2,172,310 Thomas Sept. 5, 1939 2,269,092Leddy Jan. 6, 1942 FOREIGN PATENTS Number Country Date 533,806 FranceMar. 11, 1922

